KR20030072966A - paper mulberry fiber to be used as raw material for textile product and preparation method therefor - Google Patents

Abstract

PURPOSE: Paper mulberry fiber is characterized by having excellent absorptiveness and drying property, having a dyeing ability being similar to a dyeing ability of cotton, having excellent antibacterial property and radiating far infrared ray. The paper mulberry fiber is useful for spun yarn, blended yarn, non-woven fabric, fiber reinforced plastic and so on. CONSTITUTION: Paper mulberry fiber is obtained by the steps of: treating bark of the paper mulberry with alkali to remove black skin; bleaching the bark of the paper mulberry with a bleaching agent to manufacture white skin; adding an alkali agent and/or pectolytic enzyme to remove fiber binding material in bast fiber of the paper mulberry; washing and drying the bast fiber; and then breaking the dried bast fiber.

Description

Paper mulberry fiber to be used as raw material for textile product and preparation method therefor}

The present invention relates to a mulberry fiber suitable for use as a raw material of the textile product and a method of manufacturing the same, more specifically, a mulberry tree suitable for use as a raw material of the fiber product by removing the fiber binding agent from the bask fiber used only as a paper material It relates to a fiber and a method for producing the same.

It is mainly used for Korean paper, banknotes, jinjak, hanji jangpan, munpoji, etc. from the Three Kingdoms era using its bark (bark), and woody parts have been used for composting after crushing. Fibers from the mulberry trees were rarely used for textile products because of their relatively weak fiber and short fiber length, among the same bast fibers, and they were traditionally mainly used for making paper. .

The mulberry is a deciduous broad-leaved shrub, Moraceae, and its scientific name is Broussonetia kazinoki Sie. The English name is Korean paper tree, or paper mulberry, and is mainly distributed in Korea (Central South), Japan, and Southeast Asia. Chinese medicine is called gufima (피), saponin (saponin), fat oil (fatty oil), serotonin, etc. are included in the effect of bruises and leaves and bruises, is used as a nourishing tonic. In particular, the paper mulberry, which is made of Korean paper, is a hybrid of the wild species of mulberry and locust tree.

The bark of bark is composed of the bark (black skin) and the inner skin (white skin). The pulping process using the white skin with black skin removed is beaten by beaten for 40 to 50 minutes with a bat, and then the fiber is loosened by biting it. Hanji is prepared as a liquid by beating by using the mechanical method used to filter out only the fiber, and then mixed with fiber and other drugs in an appropriate amount of water. If you make a pulp state by dicing the white baekpi (the confession process) and dry the pulverized doc fiber pulp (wet state) as it is, the fibers and fibers are entangled very hard and become almost impossible to seam. This is because pectin and lignin, which bind fibers and fibers, bind fibers to make them hard. This feature acts as a suitable property for making paper fibers, but it is the biggest obstacle to the use of other textile products. Therefore, there are no textile fibers and fiber products using the bask bast fibers.

An object of the present invention is to provide a breakthrough cellulose-based fiber made of mulberry bast fiber that can be utilized as a fiber product because it is light, has excellent absorption and drying properties, and has antimicrobial, ultraviolet blocking and far-infrared radiation properties. Such a mulberry fiber can be used as a raw material fiber of various textile products such as spun yarn (including blended yarns), nonwoven fabrics, fiber reinforced plastics, and the like. It is also an object of the present invention to provide a method for producing a mulberry fiber having the above characteristics. The inventors of the present invention, by effectively removing the fiber binding agents, such as pectin or lignin contained in the mulberry fiber pulp, can be prepared with a mulberry fiber having strength and processability as a fiber having a number of excellent properties of the mulberry fiber The present invention has been completed.

1 is a picture showing the raw bark,

2 is a photograph showing the first processed black mulberry,

Figure 3 is a photograph showing the second-processed paper mulberry

4 is a photograph showing the mulberry fiber pulp,

Figure 5 is a textile fiber made of mulberry fiber prepared according to the present invention.

The present invention comprises the steps of removing black skin by treating with an alkali from the bark of bark; Bleaching the prepared mulberry bark with a bleach to prepare a white skin; Beating the white skin to form a mulberry pulp; Removing the fiber binding material of the bask fiber by adding alkaline and / or pectinase to the pulp that has undergone the beating step; Washing and drying the mulberry bast fibers from which the fiber binding material has been removed; And it provides a method for producing a cotton fiber of the mulberry made of the step of blending the dried bast fiber. In some cases, it is possible to omit the confession step and remove the fiber binding material directly from the white bark.

The method of preparing the mulberry pulp is to process the mulberry bark with an alkali such as caustic soda in the primary processing and refining process to remove the outer skin to prepare a skin-containing material containing fiber. As the alkali treatment, it is preferably immersed in 10 to 15% by weight of caustic soda water solution and boiled for 1 to 3 hours. The mulch becomes more flexible, the fiber binder and the non-fiber are removed to some extent, and the skin (black skin) is completely removed. Such a process is called self-cooking or increase in the Korean paper industry.

The first cut processed by the secondary processing and refining process is soaked in bleach, for example, an aqueous solution of hypochlorous acid, and processed into white skin.

The treated white mulberry is pulp by the tertiary processing and beating process. The pulping process of the white paper mulberry is a traditional method, which is beaten for 40 to 50 minutes with a bat, followed by a sea island process that releases the fiber by spinning the mulberry fiber. This process is called confession (叩 解). In addition to beating and beating raw materials directly, there is a mechanical method that uses a beater as a method of pulverizing the raw materials. Various types of beaters may be used, such as marbitters and knife beaters. The beating process is filled with water at the confession period, and the appropriate amount of white skin is added to rotate it for 3 to 5 hours, preferably 2 to 3 hours. (The process up to here is almost the same as the process of manufacturing paper fiber pulp paper, which is used as the material of Hanji in the process of making paper. The same and are known facts).

However, in order to utilize the fiber of the mulberry fiber as a fiber state, the first priority is to make the cotton state. When the dried mulberry fiber pulp (wet state) that has undergone the bleeding process is dried as it is, the fiber and the fiber are entangled very hard and the cotton state Can't make it. This is because pectin and lignin, which bind the fibers and fibers, remain and bind the fibers in the drying process to make them hard. This property works well for paper making, but it is used for other textile products. It is the biggest obstacle in doing so.

Looking at the composition of the bask fiber, it is composed of about 70 to 85% of holocellulose, 7 to 10% of extracts (water, alkali, organic solvent, etc.), 7 to 10% of pectin, 3 to 5% of lignin, and 2 to 5% of ash. Among them, the pectin, widely distributed in the plant system, mainly binds to the intercellular layer or the primary wall of young cells, and acts as a grass for constituting plant tissues. Acts as. In the case of the bask fiber, there is a large amount of pectin, and the interfiber pectin plays an important role in binding the bast fibers to the insoluble pectin by incorporating lignin and the like, and in particular, has a more complicated chemical structure and is not easily removed.

In the present invention, a biochemical method or the above chemical method of treating seaweed pulp with an alkaline agent, for example, caustic soda, potassium carbonate, sodium carbonate, potassium persulfate, or a pectinase such as pectinase. In addition, a biochemical method is used in combination to effectively remove the fibrous binder of the mulberry.

In the case of chemical treatment with caustic soda water, the mulberry pulp is diluted with 20 to 60 times preferably about 40 times water, and caustic soda is added at a rate of 1 to 10 g / l, preferably about 2.5 g / l, at 30 ° C. Heat to minutes to 4 hours. If necessary, 0.5 to 2 g / l metal ion sequestrant, 0.5 to 2 g / l potassium persulfate and 1 to 10 g / l potassium persulfate are added. After washing several times after the treatment, if necessary in order to improve the properties of the fiber, it may be treated with a softening agent and an antistatic agent in addition to 10 minutes to 1 hour at 50 to 60 ℃.

Biochemical treatment method is to dilute the mulberry pulp with 20 to 60 times preferably about 40 times water, add 0.1 to 10 g / L of pectinase and preferably about 1 g / L and the pH of the treatment solution is slightly acidic. After adjusting for 1 hour to 3 hours at 50 to 70 ℃, 10 minutes at 95 ℃ or more to remove the activity of the enzyme (deactivation), then dehydrated, washed several times with hot and cold water. If necessary, 0.5 to 2 g / l of dispersant and 5 to 10 g / l of commercial starch degrading enzyme are added to the pectinase. In order to improve the properties of the fiber, after washing several times after the treatment, if necessary to improve the properties of the fiber, it may be treated with a softening agent and an antistatic agent at 50 to 60 ° C. for 10 minutes to 1 hour. .

In the case of the combination of alkaline treatment and enzyme treatment, first, the mulberry pulp is diluted with 20 to 60 times water, preferably about 40 times water, and 0.1 to 10 g / L of pectinase is preferably added at a rate of about 1 g / L. The pH is adjusted to weak acidity and treated at 50 to 70 ° C. for 1 to 3 hours. If necessary, 0.5 to 2 g / l of dispersant and 5 to 10 g / l of starch degrading enzyme are added to the pectinase. After the enzyme treatment, caustic soda is added at a ratio of 1 to 10 g / l, preferably about 2.5 g / l, and heated at 95 ° C. for at least 30 minutes to perform both deactivation and alkali treatment of the enzyme. If necessary, 0.5-2 g / l metal ion sequestrant, 0.5-2 g / l penetrant and / or refining agent and / or 1-10 g / l potassium persulfate are added.

Hereinafter, referring to the accompanying drawings of the present invention, Figure 1 is a picture showing the unprocessed mulberry bark, Figure 2 is a picture showing the first processed mulberry bark, Figure 3 shows a second processed mulberry bark 4 is a photograph showing a mulberry fiber pulp.

Hereinafter, the present invention will be described in detail with reference to the following examples, but the present invention is not limited to these examples.

Example 1 (Chemical Method)

Fill 100 g of dehydrated mulberry fiber pulp with a liquid ratio of 1:40, 1 g / l of commercial metal ion sequestrants and penetrants (Delinol VB, Donglim Emulsifier), 1g / ℓ of commercial refiner (Petalin-HBR, Donglim Emulsifier), caustic soda (50%), 5 g / l, 5 g / l of potassium persulfate was prepared, and then treated at 98 ° C. for 60 minutes, dehydrated, washed several times with hot and cold water, and then sold with a softener (Newsofter- SND, Samyoung Chemical) and antistatic agent (Newstat A-5, Samyoung Chemical) are treated with a treatment solution of 1g / ℓ ratio for 30 minutes at 60 ℃, dehydrated and dried, followed by a blending process that releases fibers. Cotton state such as raw cotton is produced. The cotton fiber prepared in this way is 100% of the fiber material using only the fiber and known natural fibers (cotton, wool, silk, etc.), recycled fibers (rayon, tencel, polynostic, etc.) and synthetic fibers (polyester, nylon acrylic, etc.) ), It is possible to manufacture a variety of textile products containing fiber fibers such as yarn, non-woven fabric, fiber reinforced plastics.

Example 2 (biochemical method)

About 100 g of dehydrated mulberry fiber pulp was filled with water ratio 1:40, and 1 g / L of commercially available dispersant and commercial pectinase (including pectinase, hemicellulose, and cellulase) (Rapidase Liq plus, Vision Biochem Co., Ltd.) ) 7.5g / ℓ, commercial starch degrading enzyme (amylase, Hwagwang Pure Chemical Industry Co., Ltd.), 7.5g / ℓ ratio of the treatment solution, and then adjust the pH of the treatment solution to weakly acidic treatment for 120 minutes at 60 ℃, After 10 minutes at 98 ℃ to remove the activity of the enzyme (deactivation), and then dehydrated, washed several times with hot and cold water, and then commercially available softener and antistatic agent at 60 ℃ with a treatment solution of 1g / ℓ respectively After treatment for 30 minutes in, dehydrated and dried, and then treated in the same manner as in Example 1.

Example 3 (Combination of Biochemical and Chemical Methods)

About 100 g of dehydrated mulberry fiber pulp was filled with water ratio 1:40, and 1 g / L of commercially available dispersant and commercial pectinase (including pectinase, hemicellulose, and cellulase) (Rapidase Liq plus, Vision Biochem Co., Ltd.) ) 3.5g / ℓ, commercial starch degrading enzyme (amylase, Hwagwang Pure Chemical Co., Ltd., Japan) 3.5g / ℓ ratio of the treatment solution, and then adjust the pH of the treatment solution to slightly acidic and then 120 minutes at 60 ℃ , Commercially available metal ion sequestrants and penetrants (Delinol VB, Donglim Emulsifier) 1g / ℓ, commercial refiners (Petalin-HBR, Donglim Emulsifier) 1g / ℓ, Caustic Soda (50%), 2g / ℓ, Potassium Persulfate 2g / ℓ After the treatment solution was prepared at a ratio, the treatment was performed at 98 ° C. for 20 minutes to simultaneously treat inactivation (removal of enzymatic activity) and alkali, followed by dehydration, washing several times with hot water and cold water, followed by the same method as in Example 1 Process.

Test Example

Tables 1 and 2 show the results of the fabrication from the cotton / dough fibers (80 w% / 20 w%) blend yarn containing the mulberry fibers to evaluate the absorption and drying performance.

<Table 1> Hygroscopic performance

<Table 2> Drying Performance

The above table shows the absorption and drying performance of the two samples, and it can be seen that there is a difference in absorption and drying performance between the two samples. That is, the final moisture absorption of the two samples was almost the same, but the cotton / dough fiber knitted fabric was found to have a quicker and faster drying effect than the 100% cotton knitted fabric.

This performance is expected to increase as the blending ratio of the mulberry fiber increases, can be utilized as a sweat-absorbent, fast drying material. In addition, the mulberry fiber blend, there was no big problem in peeling properties, the weight was 2.3% lighter than 100% cotton. In addition, when increasing the mulch fiber blend ratio, it can be used as a very excellent material in light weight than 100% cotton material.

On the other hand, the far infrared radiation effect was found to be excellent. Table 3 shows the far-infrared radiation efficiency according to the blend ratio of Doc / cotton fibers.

<Table 3> Far-Infrared Radiation Efficiency by Doc / Cotton Blend Ratio

% Blend Emissivity (5-20㎛) Radiation energy (W / ㎡ · ㎛, 37 ℃) Doc / cotton (0/100) 0.878 3.39 × 10 ² Doc / cotton (20/80) 0.881 3.40 × 10 ² Doc / cotton (40/60) 0.885 3.41 × 10 ² Doc / cotton (60/40) 0.887 3.42 × 10 ² Doc / cotton (80/20) 0.891 3.44 × 10 ² Doc / cotton (100/0) 0.893 3.44 × 10 ²

Radiation energy increased as the blending rate of mulberry fiber increased. The radiant energy of 100% mulberry fiber was 3.44 × 10 ^{2, which} is lower than that of mineral-based far-infrared radiator but higher than that of ordinary fiber.

The mulberry fiber (cotton state) produced by the present invention is a new cellulose-based fiber material which has excellent absorption and drying speed, is lighter than cotton, has almost the same dyeability as cotton, and has excellent antimicrobial and far-infrared radiation effects. It provides raw fiber which can manufacture various types of textile products such as nonwoven fabric and fiber reinforced plastic.

Claims (5)

Treating black bark with alkali to remove black skin; Bleaching the prepared bark of mulberry bark with a bleach to prepare a white bark; Removing the fiber binding material of the bark bast fibers by adding alkaline and / or pectinase to the mulberry bark; Washing and drying the mulberry bast fibers from which the fiber binding material has been removed; And Method of producing a cotton fiber of the mulberry fiber comprising the step of blending the dried bast fiber. The method of claim 1, wherein after the step of preparing the white skin, the method of producing cotton wool fibers comprising a beating step of deciphering the white skin to form a mulberry pulp. The method of claim 2, wherein the step of removing the fiber binding material of the bask fiber is diluted with 20 to 60 times of water and the caustic soda is added at a rate of 1 to 10 g / l 30 minutes to 4 hours at 95 ℃ After heating the alkaline treatment method or distilled mulberry pulp with 20 to 60 times water, 0.1 to 10 g / ℓ of pectinase and adjust the pH of the treatment solution to slightly acidic treatment for 1 to 3 hours at 50 to 70 ℃, A method of producing cotton wool fibers made by the pectinase enzyme method to remove the activity of the enzyme by treating at 95 ℃ or more for 10 minutes. The method of claim 3, wherein the alkali treatment method is made by adding 0.5-2 g / l metal ion sequestrant, 0.5-2 g / l potassium persulfate 1-10 g / l in addition to caustic soda and the pectin Decomposing enzyme treatment is further added to the pectinase at a ratio of 0.5 to 2 g / l of dispersant and 5 to 10 g / l of commercially available starch degrading enzyme, and washed several times after the treatment step, and then, if necessary, to improve the properties of the fiber. Method for producing cotton wool fibers comprising the step of further processing for 10 minutes to 1 hour at 50 to 60 ℃ treated with a softening agent and an antistatic agent. A mulberry fiber suitable for use as a raw material for textile products including the yarns, blended yarns, nonwoven fabrics, woven fabrics, and fabrics for reinforcing industrial plastics according to any one of claims 1 to 4.